Description

First off, thanks to Airtripper for a great compact extruder design!

This is my J-tripper -- a remix to the Airtripper design to allow for DIRECT mounting of a J-head (or similarlly slotted hot end) to the bottom of the Airtripper direct-drive extruder. I made this design to replace the finicky parts that I encountered on the Mk 7 / QUBD extruder designs.

Once the extruder body is assembled and mounted to the stepper motor (as in Airtripper's instructions), simply slide the J-head hot-end into the bottom slot.

I consider this version "Beta" as I have only been using it for a few days. But it seems reliable so far, so I'm releasing it to the public. As the design is proven and updated to the Airtripper V3 core, I will also release the OpenSCAD file.

This is the reference extruder design for the F3 CubeMax (come see us at MakerFaire San Mateo 2013).

Recent Comments

The stepper is sandwiched between the extruder body (this thing) and the acrylic plate you see in the photo. I think the photo just makes it really hard to see. The motor being screwed into carriage plate is how the entire extruder is mounted to the X-carriage. In retrospect, acrylic was probably not the ideal material for the X-carriage plate. It has a tendency to flex a bit, so the extruder is not held rock solid vertically as it moves. This can lead to sloppy prints.

I have since replaced the X-carriage plate with 4mm aluminum plate -- works much better.

The stepper is sandwiched between the extruder body (this thing) and the acrylic plate you see in the photo. I think the photo just makes it really hard to see. The motor being screwed into carriage plate is how the entire extruder is mounted to the X-carriage. In retrospect, acrylic was probably not the ideal material for the X-carriage plate. It has a tendency to flex a bit, so the extruder is not held rock solid vertically as it moves. This can lead to sloppy prints.

I have since replaced the X-carriage plate with 4mm aluminum plate -- works much better.